A043405 Numbers whose base-7 representation contains exactly one 3.

3, 10, 17, 21, 22, 23, 25, 26, 27, 31, 38, 45, 52, 59, 66, 70, 71, 72, 74, 75, 76, 80, 87, 94, 101, 108, 115, 119, 120, 121, 123, 124, 125, 129, 136, 143, 147, 148, 149, 151, 152, 153, 154, 155, 156, 158, 159, 160, 161, 162, 163, 165

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Mathematica

Select[Range[200], DigitCount[#, 7, 3]==1&] (* Vincenzo Librandi, Jul 01 2015 *)

Crossrefs

Cf. A007093.

Sequence in context: A188396 A356090 A190763 * A296219 A063293 A270997

Adjacent sequences: A043402 A043403 A043404 * A043406 A043407 A043408

Keyword

nonn,base

Author

Clark Kimberling

Status

approved